text: const { expect } = require('chai');
  const getCurve = require('../../src/visuals/getCurve');
  
  describe('getCurve', () => {
    it('should export getCurve object', () => {
      expect(getCurve).to.exist;
    });
  
    it('should return correct curve string', () => {
      expect(getCurve(1, 2, 3, 4)).to.equal('M 1 2 C 2,2 2,4 3,4');
    });
  });
  